Predicted to enable identical protein binding activity. Acts upstream of or within positive regulation of smoothened signaling pathway. Predicted to be located in plasma membrane. Predicted to be active in cell surface and extracellular space. Is expressed in several structures, including alimentary system; embryo ectoderm; embryo mesenchyme; integumental system; and nose. Orthologous to human SCUBE3 (signal peptide, CUB domain and EGF like domain containing 3). [provided by Alliance of Genome Resources, Apr 2022]